luck/tmp_suning_uos_patched
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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching

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Pull livepatch update from Jiri Kosina:
 "Return value checking fixup in livepatching samples, from Nicholas Mc
  Guire"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/livepatching:
  livepatch: check kzalloc return values
This commit is contained in:
Linus Torvalds 2019-01-05 17:51:36 -08:00
commit 1686cc1a31
2 changed files with 9 additions and 0 deletions
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5
samples/livepatch/livepatch-shadow-fix1.c
View File

@ -89,6 +89,11 @@ struct dummy *livepatch_fix1_dummy_alloc(void)
* pointer to handle resource release.
*/
leak = kzalloc(sizeof(int), GFP_KERNEL);
if (!leak) {
kfree(d);
return NULL;
}
klp_shadow_alloc(d, SV_LEAK, sizeof(leak), GFP_KERNEL,
shadow_leak_ctor, leak);

4
samples/livepatch/livepatch-shadow-mod.c
View File

@ -118,6 +118,10 @@ noinline struct dummy *dummy_alloc(void)
/* Oops, forgot to save leak! */
leak = kzalloc(sizeof(int), GFP_KERNEL);
if (!leak) {
kfree(d);
return NULL;
}
pr_info("%s: dummy @ %p, expires @ %lx\n",
__func__, d, d->jiffies_expire);